Title:
EXHAUST GAS CLEANING DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP3685052
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To generate reformed gas in a quantity consistent with the required amount, by operating a reforming device in a state of high efficiency in compliance with the running state of an engine.
SOLUTION: Part of exhaust gas is led from an exhaust gas passage 2 of an engine 1 into the reforming device 5 through an exhaust gas flowing amount control valve 4, and the fuel within a fuel tank 6 is supplied through a fuel flow amount control valve 8. The reforming device 5 reforms these to generate reformed gas including at least hydrogen, and supplies it to an exhaust gas passage 2 on the upper stream side of a NOx trap catalyst 12 through a buffer tank 10 and a reformed gas supply control valve 11. In this case, the amount of fuel to be supplied to and the amount of exhaust gas to be led into the reforming device 5 are adjusted in compliance with the required amount of hydrogen to reduce NOx trapped in the NOx trap catalyst 12 and the running state of the engine 1 (temperature of the exhaust gas, etc.).
Inventors:
Shunichi Shiino
Nao Aoyama
Hirofumi Tsuchida
Isamu Hotta
Nao Aoyama
Hirofumi Tsuchida
Isamu Hotta
Application Number:
JP2000365234A
Publication Date:
August 17, 2005
Filing Date:
November 30, 2000
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
F02M27/02; B01D53/94; F01N3/08; F01N3/20; F01N3/28; F01N9/00; F02D45/00; (IPC1-7): F01N3/08; F01N3/20; F01N3/28; F01N9/00; F02D45/00; F02M27/02
Domestic Patent References:
| JP5106430A | ||||
| JP63038618U | ||||
| JP2000240428A | ||||
| JP6307232A |
Attorney, Agent or Firm:
Tomijio Sasashima
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